Taco,
The operational shortcomings experienced by the GenX, Trent, Leap and GTF are disgraceful, and in the case of those engines installed on ETOPS certified aircraft, the industry and traveling public have been most fortunate that there have been no dual engine failures or ditchings.
Can you tell us about all the disgraceful shortcomings and your source of this information? Also, maybe you can explain why there haven't been any dual engine failures on ETOPS certified aircraft besides luck.